tillrohrmann opened a new pull request #9664: [FLINK-14043] Speed up SavepointMigrationTestBase sub classes URL: https://github.com/apache/flink/pull/9664 ## What is the purpose of the change Since all SavepointMigrationTestBase sub classes rely on the MigrationTestUtils.AccumulatorCountingSink which uses user code accumulators in order to communicate with the test driver, we set the heartbeat interval to 300ms in order to speed the test execution up. The reason this works is that Flink transports user code accumulators from the TM to the JM via the heartbeats. Hence, the heartbeat interval represents the lower boundary for the test completion. ## Verifying this change This change is a trivial rework / code cleanup without any test coverage. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (not applicable)
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